干旱区生态环境知识资源中心(Arid): Crop coefficient determination and evapotranspiration estimation of watermelon under water deficit in a cold and arid environment

Arid

DOI	10.3389/fpls.2023.1153835
	Crop coefficient determination and evapotranspiration estimation of watermelon under water deficit in a cold and arid environment
	Zhang, Hengjia; Wang, Zeyi; Yu, Shouchao; Teng, Anguo; Zhang, Changlong; Lei, Lian; Ba, Yuchun; Chen, Xietian
通讯作者	Zhang, HJ
来源期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
出版年	2023
卷号	14
英文摘要	To investigate the evapotranspiration and crop coefficient of oasis watermelon under water deficit (WD), mild (60%-70% field capacity, FC)and moderate (50%-60% FC) WD levels were set up at the various growth stages of watermelon, including seedling stage (SS), vine stage (VS), flowering and fruiting stage (FS), expansion stage (ES), and maturity stage (MS), with adequate water supply (70%-80% FC) during the growing season as a control. A two-year (2020-2021) field trial was carried out in the Hexi oasis area of China to explore the effect of WD on watermelon evapotranspiration characteristics and crop coefficient under sub-membrane drip irrigation. The results indicated that the daily reference crop evapotranspiration showed a sawtooth fluctuation which was extremely significantly and positively correlated with temperature, sunshine hours, and wind speed. The water consumption during the entire growing season of watermelon varied from 281-323 mm (2020) and 290-334 mm (2021), among which the phasic evapotranspiration valued the maximum during ES, accounting for 37.85% (2020) and 38.94% (2021) in total, followed in the order of VS, SS, MS, and FS. The evapotranspiration intensity of watermelon increased rapidly from SS to VS, reaching the maximum with 5.82 mm & BULL;d(-1) at ES, after which it gradually decreased. The crop coefficient at SS, VS, FS, ES, and MS varied from 0.400 to 0.477, from 0.550 to 0.771, from 0.824 to 1.168, from 0.910 to 1.247, and from 0.541 to 0.803, respectively. Any period of WD reduced the crop coefficient and evapotranspiration intensity of watermelon at that stage. And then the relationship between LAI and crop coefficient can be characterized better by an exponential regression, thereby establishing a model for estimating the evapotranspiration of watermelon with a Nash efficiency coefficient of 0.9 or more. Hence, the water demand characteristics of oasis watermelon differ significantly during different growth stages, and reasonable irrigation and water control management measures need to be conducted in conjunction with the water requirements features of each growth stage. Also, this work aims to provide a theoretical basis for the irrigation management of watermelon under sub-membrane drip irrigation in desert oases of cold and arid environments.
英文关键词	water stress reference crop evapotranspiration water consumption characteristics meteorogical factors watermelon leaf area index
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:001019015800001
WOS关键词	USE EFFICIENCY ; IRRIGATION ; QUALITY ; YIELD ; MODEL ; TRANSPIRATION ; PRODUCTIVITY ; APPLE ; WHEAT
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396624
推荐引用方式 GB/T 7714	Zhang, Hengjia,Wang, Zeyi,Yu, Shouchao,et al. Crop coefficient determination and evapotranspiration estimation of watermelon under water deficit in a cold and arid environment[J],2023,14.
APA	Zhang, Hengjia.,Wang, Zeyi.,Yu, Shouchao.,Teng, Anguo.,Zhang, Changlong.,...&Chen, Xietian.(2023).Crop coefficient determination and evapotranspiration estimation of watermelon under water deficit in a cold and arid environment.FRONTIERS IN PLANT SCIENCE,14.
MLA	Zhang, Hengjia,et al."Crop coefficient determination and evapotranspiration estimation of watermelon under water deficit in a cold and arid environment".FRONTIERS IN PLANT SCIENCE 14(2023).